Agilent/Keysight 81310LI – Lightwave Component Analyzer Interface

The Agilent/Keysight 81310LI is an interface module for Lightwave Component Analyzers, enabling precise characterization of optoelectronic components and systems across microwave and millimeter-wave frequencies. It measures electro-optic transmission and electrical reflection characteristics as a function of modulation frequency, extracting critical S-parameters (S21, S11, S22) and performance metrics including responsivity, 3-dB cutoff frequency, group delay, and insertion loss.

– Technical Specifications

Measurement Capabilities
• Electro-optic transmission characteristics (S21)
• Electrical reflection characteristics (S11, S22)
• Slope responsivity for electro-optic and opto-electronic devices
• 3-dB cutoff frequency and group delay versus frequency
• Insertion loss and transmission bandwidth
• All electrical S-parameter measurements
• Modulation frequency range: up to 67 GHz (calibrated and traceable)

Optical Specifications
• Operating input wavelength range: 750 nm to 1650 nm
• Maximum linear average input power: −1 dBm
• Maximum safe average input power: +3 dBm
• Optical return loss: >14 dBo (typical)
• Average power measurement range: −25 dBm to −1 dBm
• Average power measurement uncertainty: ±0.7 dBo (typical)

Electrical Specifications
• Operating frequency range: 10 MHz to 26.5 GHz
• Relative frequency response uncertainty @ 20 GHz: ±1.5 dB (±1.0 dB typical)
• Absolute frequency response uncertainty @ 20 GHz: ±2.0 dB typical (E/O), ±1.8 dB typical (O/E)
• Noise floor @ 20 GHz: −69 dB W/A (E/O), −68 dB A/W (O/E)

– Key Features

• LC or SC straight optical connectors
• RF connectors: 3.5 mm male
• Supports transmitter wavelength 850 nm ± 10 nm
• Integrates with Lightwave Component Analyzer mainframes
• Advanced programming interfaces for control and automation

– Typical Applications

Transmitters and receivers, PIN diodes, avalanche photodiodes (APDs), lithium niobate (LiNbO₃) modulators, electro-absorption modulators, and modulated lasers in 10 Gb/s and 40 Gb/s transmission systems, Fibre Channel, CATV, radio-over-fiber, and aerospace & defense applications.

– Compatibility & Integration

The 81310LI is designed for direct integration with a Lightwave Component Analyzer mainframe and supports advanced programming interfaces for automated test sequences.